Extension table



pni 8 1924. l,489,951

C. KUEHN ET A1.

EXTENSION TABLE Filed April 15", 1922 :s sheets-sheet;

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April s, 1924. www

C. KUEHN ET AL EXTENSION TABLE Filed April 15, 1922 3 Sheets-Sheet 2 pn-i 8 1924. fs

c. KUEHN ET Al.

EXTENS ION TABLE Filed April 13 1922 5 sheets-Sheet 3 A TTORNE Y Patented Apr.. 8, 11.924,

CHRISTIAN EUEHN AND HENRY 'KEHN7 0F ST. LOUIS, MISSOURI.

nxrnNsIoN TABLE.

Application tiled April 13, 1922. Serial rNo. 552,397.

To all whom t may concern,

Be it known that we, CHRISTIAN KUEHN and HENRY KUnHN, citizens of the United States, residing at St. Louis, in the State of Missouri, have invented a new and useful Improvement in Extension Tables, of which the following is a specica'tion.

Our invention has relation to improvements in extension tables, and consists in the novel features of construction more fully set forth in the specication and pointed out in the claim. Y

The present invention is directed to that class of tables whose length may be varied by the addition or insertion of leaves or sections between the separable halves forming the top of the table, the object of the invention being to provide means for storing the leaves beneath the table top when the halves forming said top have been brought together, the table being so constructed that as the halves of the top are pulled apart for the purpose of extending the table, the leaves stored beneath the table will be automatically and successively elevated into the plane of the table top, and when said plane has been reached, they will, with the exception of the middle leaf of the series and the last to be elevated to the plane aforesaid, be drawn outwardly by the respective halves of the top as said halves are being moved farther and farther apart; and when the halves with their attached leaves have been pulled outward their full limit, the leaf forming the middle of the series and the middle of the extended table, will be elevated into the plane of the table top thereby accomplishing the desired extension. There is, of course, suilicient play between the parts to allow for the dowels to enter and be withdrawn from the sockets provided for them in the several leaves as well understood in the art. A. further object is to provide a table of the character referred to in which not only the'elevation of the leaves with an extension of the table, but `their depression into position beneath the table with a contracting movement of the table halves, shall be automatic.

The construction is an improvement over that shown in U. S. Patent No. 1,236,3QO granted August 7, 1917, to Christian Kuehn, and contains a number of novel features, the advantages of which will be more fully apparent from the following detailed description of the invention in connection with the accompanying drawings, in which- Figure l represents a top plan of the eX- tended table showing the operating mechanism, the leaves being broken away and also parts of the top sections; Fig. 2 is an enlarged longitudinal section taken on the line 2 2 of Fig. l; Fig. 3 is an enlarged transverse section taken on the line 3 3 of Fig. l; Fig. 4 is a longitudinal section taken on the same plane as Fig. 2, but with the table sections contracted to their normal positions, showing the leaves nested beneath the table top; Fig. 5 is a side elevation of the table looking toward the ends of the leaves; Fig. 6 is a Ycross-section taken on the line 6 6 of Fig. 5; Fig. 7 is a bottom plan of one of the leaves.

Referring to the drawings, 1 represents the pedestal of the table carrying at its ups per end a platform 2, said platform carrying on its upper surface a pair of leaf-supporting members 3, 3 in spaced relation, each of said members having a recess 1 at the middle, said recessbeing slightly wider than a table leaf and having its upper corners beveled at r', 7. Secured to the platform 2 just inside each member 3 are two tubular members 4, 5, the former extending beyond the platform in one direction, and the latterextending in the opposite direction. rlhe members 4, 4 constitute a pair, and each receives telescopically within it a rod (iY which carries an angle bracket 7 on its face end. One section 8 of the table top is secured to the brackets 7, said section being freely movable in and out since the rods 6 are freely movable in the tubing 4.

, The members-5, 5 are also provided with telescoping rods 9, .9 carrying brackets lO, @5 `10.011 their 'free ends to which the other sec- -tion 11 of the table top is secured. The section l1 is also freely movable in and out.

A guide bar 12 is disposed across the center of the platform 2 and a lever 13 is pivotally mounted on said guide bar at the center, said lever carrying a roller 14 at each end. A slide 15 is secured to the section 8 by a bloclr 16, said slide being wider near its free end than near the other end, thus providing a shoulder 17 about as far from the free end as the width of a table leaf. A stop 18 is secured to the side of the platform 2, said stop being engaged by the shoulder 17 when the section 8 is pulled out to its extreme position.

The section 11 also has a slide 19 secured to it by a block 20, said slide being shouldered at 21 so as to provide a wide portion and a narrow portion. When thev table top sections 8 and 11 are extended as shown in Fig. 1 the wide parts of the slides 15 and 19 are over the platform 2 between the guide 12 and the rollers 14 of lever 13, a pin 21 engaging the lever 13 to limit the outward movement of section 11, the lever being arrested in the position shown by its rollers engaging the end walls .22 of shoesv 23 secured to the inner ends of bars 24. The bars 25 are adapted to operate in grooves 26 formed in the upper side of the platform 2, and each of said bars has a T-shaped member 27 secured to its outer end, the crossmember a of the T resting above the platform while the stem Z) of the T projects downwardly through a slot s linthe platform. A bell-crank lever 28 is disposed on each side of the member 27 and is pivotally mounted between brackets 29, 29 by a pin 30 which passes through an elongated slot 31 in the head a of the member 27. The depending arm of the lever 28 is connectedl at 32 to the stem b of member 27, and a spring 33 is secured to each end of the pin 30 and to -each end of a pin 34 in the inner end of the head a. A head 35 is secured to the upright arms of lever 28. The levers 28 serve as supporting members for a table leaf 36. In the table illustrated there are two more table leaves 37 and 38, the former being connected to section 8 by links 39,139 pivotally connected to slotted eyes 40, 40 on the leaf 37 and slidingly connected" to rods '41, 411 on said section. The leaf 38 is similarly connected to section 11. The leaf 36 is maintained against displacement by strips 42 secured to the under side of the leaf and so spaced that a strip will be in close relation to each supporting member 3 and on the outside of said member, the beveled ends 42', 42', engaging the beveled 'ends 43, 43 of strips 44, 44 on the member 3 outside the recess 71.

A wire loop 45' (or equivalent) isslidingly mounted in eyes 46, 46 beneath the section 11, and oneend' 47' of a wire 48 is slidingly mountedkon the lowerrun ofloop 45, the other end` of'said wire48 being connected Ato the lever 13 for an object presently to appear.

In Fig. 1 the table sections are shown eX- tended and the leaves in the plane of said sections but not articulated, this being the position of the leaves just after bringing them all into a connnon plane. The final step of extending the table is to push the sections together so that all are in contact. Then it is desired to make the table smaller the sections are first pulled apart to the position shown in Fig. 1, after which the loop 45 is pulled outwardly thus drawing on the wire 48 and oscillating the lever 13 to the dotted position m (Fig. 1). The inward movement of the rollers 14, 14 permits the bars 24, 24 to move inwardly with a rocking of the leaf supports 28 under the weight ofthe leaf 36. The top surface of leaf 36 is now depressed just below the plane of lea-f 37 so that section 8 can be moved inwardly a sufficient distance to bring leaf 37 just above leaf 36. At this time the slide 15 has moved inwardly sufficiently to bring the shoulder 17 past the roller 14, thus permitting the lever 13 to oscillate still further to the position of dotted line y (Fig. 1) and allowing the leaf supports 28, 28 to be rocked to the next lower position, which is just a trifle more than the thickness of a leaf. 'With leaf 37 now depressed below the plane of leaf 38, thelatter is moved inwardly with section 11, pushing leaf 38 over leaf 37, when shoulder 21 will be past the roller 14, permitting a further oscillation of lever 13, and further inward movement of bars 24, 24 on slightly depressing leaf 38 and, of course, the'other leaves below. With the last leaf now below the plane of sections 8 and 11, these sections can be pushed together as shown in Fig, 4. In extending the table the sections 8 and 11 are pulled apart to permit Vthe leaf 38 to be raised by the force exerted on leaf supports 28 by springs 33, leaf 38 then being pulled clear of leaf 37 which in turn rises. lin order to bring up the last leaf 36 sections 8 and 11 are pulled' apart as far as they will go (Fig. 1) the pin 21 on slide 19 engaging the lever 13 and rocking it to a right angle position, thus forcing the bars 24, 24 outwardly to their extreme position and elevating said leaf.

Having described our invention, we claim:

In combination with a table provided with a base and a top having a pair of movable sections normally juxtaposed and meeting at the center line of the table, a platform seinto the plane of the table top with a sepaconnections to permit the section to be rating movement of the sections, and sutmoved inwardly above the leaf for contractable permanent connections between one of ing the table. 10 the leaves and one of the top sections for In testimony whereof we hereunto aiX moving said leaf onto the supporting memour signatures.

bers with a further movement of said sec- CHRISTIAN KUEI-IN. tions, there being sucent play between said HENRY KUEHN. 

